摘要:
A waterless planographic printing plate precursor has, on a substrate, at least a photosensitive layer or heat sensitive layer and a silicone rubber layer, which is a waterless planographic printing plate precursor, wherein 1) a color pigment and a pigment dispersant are contained in the silicone rubber layer, 2) the a content of color pigment is 0.1 to 20 vol % in the silicone rubber layer, and 3) the pigment dispersant contains an organic complex compound including a metal and an organic compound.
摘要:
A method of printing a printed output of a press comprising ink on a print medium applies ink to a surface, places individually controlled drops of aqueous solution onto the print medium in a drop pattern, and transfers ink from the surface to areas of the print medium that are free of aqueous solution to produce the printed output of the press. A method of variable printing is also disclosed.
摘要:
An imageable element can be imaged using non-ablative processes. This element has a non-silicone, non-crosslinked layer contiguous to and under an ink-repelling crosslinked silicone rubber layer. These elements can be used for providing lithographic printing plates useful for waterless printing (no fountain solution). Processing after imaging is relatively simple with either water or an aqueous solution consisting essentially of a surfactant or mechanical means to remove the crosslinked silicone rubber layer and a minor portion of the non-silicone, non-crosslinked layer in the imaged regions.
摘要:
Systems and methods for high-speed variable printing are provided. Ink jet technology and lithographic systems may be combined in such a way to create a fully variable and high-quality print system. Ink is applied to a printing cylinder. An aqueous solution is then applied on top of the ink to produce a negative image. A positive image is then transferred in ink to a print medium. The systems and methods described herein may be used to create high-quality one-to-one marketing applications.
摘要:
Systems and methods for high-speed variable printing are provided. Ink jet technology and lithographic systems may be combined in such a way to create a fully variable and high-quality print system. At least one area of a plate is reserved for variable information to be printed. The plate may already comprises static information to be printed. Ink is then applied to the at least one area of the plate reserved for the variable information. An aqueous solution is applied to a web to produce a negative image of the variable information, and a positive image of the variable information is transferred in ink to the web. The systems and methods described herein may be used to create high-quality one-to-one marketing applications.
摘要:
Method of on-press developing a thermosensitive lithographic printing member with ink and/or fountain solution is described. The printing member comprises on a substrate a thermosensitive layer soluble or dispersible in ink and/or fountain solution and capable of hardening upon exposure to an infrared radiation. The printing member can be a pre-coated plate or can be prepared on press by coating a thermosensitive layer onto a substrate that is a sheet material or a seamless sleeve mounted on a plate cylinder or is the surface of a plate cylinder of the lithographic press.
摘要:
A single manufacturing pass for manufacturing a multilayered self-organized coating onto a substrate to provide all of the functions usually provided in multiple-pass coatings for manufacturing an infrared imageable offset lithographic printing plate; and a process whereby two or more polymeric materials that cannot usually co-exist in solution may be dissolved in suitably dilute solvent mixtures which, when coated onto a substrate and the solvents evaporated, deposit a continuous graduation of polymeric mixtures vertical to the substrate, caused by the self-assembly process.
摘要:
A directly imageable planographic printing plate precursor, which may be of the positive or negative type, has at least a heat sensitive layer on a substrate. The heat sensitive layer contains a light-to-heat conversion material and a metal-containing organic compound.
摘要:
Thermally imageable elements and methods for their preparation and use are disclosed. The elements contain, in order, a substrate; an underlayer; and an ink-repellent layer. The underlayer contains a crosslinked allyl functional polyurethane. A photothermal conversion material is present in either in the underlayer or in an absorber layer between the underlayer and the ink-repellent layer. Thermal imaging and development removes the ink-repellent layer and reveals the underlayer in the exposed regions to form an imaged element useful as a waterless lithographic printing plate.
摘要:
In one embodiment, the present invention is directed to a method for preparing a printing member by coating a printing cylinder with a layer comprising ultraviolet-curable silicones and curing the layer using ultraviolet radiation.